package lex.map;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class MapKeyTest {

	public static void main(String[] args) {
		Map<Object, String> map = new HashMap<Object, String>();
		map.put(1, "Integer");
		map.put(2, "Integer");

		map.put("a", "String");
		map.put("b", "String");

		Set<String> values = new HashSet<String>();
		values.addAll(map.values());
		System.out.println(values);
	}
}
